Hemi-prosthesis knuckles HAND AND FOOT ALL metatarsophalangeal joints

摘要

The utility model is aimed at shortening the postoperative healing due to high primary stability and early functional load on the joint in the early period after surgery. Hemi-prosthesis joints of the hands and the metatarsophalangeal joint of the foot contains the joint head to foot. The novelty of the claimed hemi-prosthesis joint brush and metatarsophalangeal joints of the foot is articular head has a convex working surface, the radius R of which is 5-8 mm. Diameter D - 10-16 mm, the height H - 6-10 mm, the stem is tapered, the taper angle of 5-7 degrees, legs and a head axis coincide, applied to the leg of the longitudinal and transverse grooves, the surface of the articular head in contact with bone tissue patient have a grooved surface, deposited by machining.